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From "Sean (JIRA)" <>
Subject [jira] [Created] (CTAKES-129) Populate the Drug NER named entity confidence attribute
Date Fri, 11 Jan 2013 21:44:12 GMT
Sean created CTAKES-129:

             Summary: Populate the Drug NER named entity confidence attribute
                 Key: CTAKES-129
             Project: cTAKES
          Issue Type: New Feature
          Components: ctakes-drug-ner
    Affects Versions: future enhancement, 3.1-incubating
            Reporter: Sean
             Fix For: 3.1-incubating

The presence of the other drug signature elements would ramp up the value of the confidence
from 0 to approximately .95 depending upon the types of drug related attributes associated
with the mention. 
Any drug-related named entity will be assigned a base value of 0.05 for the Confidence initially;
however this value will be set to 0.15 if there is an adjacent Strength discovered. Additionally
0.05 will be added if the presence of the ‘Dosage’ attribute is determined. This value
will increase with the addition of other drug elements if discovered. ‘Confidence’ will
increase by a factor of 1.3 if Form, Route, or Duration attributes are found, and it will
increase by a factor of 1.5 if Frequency and Frequency Unit are discovered.  The maximum confidence
would be just under 1.0 (0.989 = (0.5 +0.15) x 1.3 x 1.3 x 1.3 x 1.5 x 1.5) in the event that
all elements of the drug named entity were discovered.

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